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28 Apr 2008, 00:42

448.It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.(A) It may someday be worthwhile to try to recover uranium from seawater(B) Someday, it may be worthwhile to try and recover uranium from seawater(C) Trying to recover uranium out of seawater may someday be worthwhile(D) To try for the recovery of uranium out of seawater may someday be worthwhile(E) Recovering uranium from seawater may be worthwhile to try to do someday
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28 Apr 2008, 06:32

sondenso wrote:

448.It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.(A) It may someday be worthwhile to try to recover uranium from seawater(B) Someday, it may be worthwhile to try and recover uranium from seawater(C) Trying to recover uranium out of seawater may someday be worthwhile(D) To try for the recovery of uranium out of seawater may someday be worthwhile(E) Recovering uranium from seawater may be worthwhile to try to do someday

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28 Apr 2008, 12:30

(A) It may someday be worthwhile to try to recover uranium from seawater [Hold it](B) Someday, it may be worthwhile to try and recover uranium from seawater [it implies - it may be worthwhile to try and [it may be worthwhile] recover uranium from seawater - eliminate it](C) Trying to recover uranium out of seawater may someday be worthwhile [out of sea water – eliminate it](D) To try for the recovery of uranium out of seawater may someday be worthwhile [for the recovery – awkward construction – eliminate it](E) Recovering uranium from seawater may be worthwhile to try to do someday [to try to do – redundant – eliminate it]

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28 Apr 2008, 12:50

I believe the difference b/w A and C is very subtle, even too subtle to really appear on the GMAT. From my own experience, whenever faced with an infinitive or present participle form, I tend to choose the former.
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28 Apr 2008, 16:31

A is correct for ||ism someday is || to at present.

sondenso wrote:

448.It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.(A) It may someday be worthwhile to try to recover uranium from seawater(B) Someday, it may be worthwhile to try and recover uranium from seawater(C) Trying to recover uranium out of seawater may someday be worthwhile(D) To try for the recovery of uranium out of seawater may someday be worthwhile(E) Recovering uranium from seawater may be worthwhile to try to do someday

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30 Apr 2008, 12:08

sondenso wrote:

448.It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.(A) It may someday be worthwhile to try to recover uranium from seawater(B) Someday, it may be worthwhile to try and recover uranium from seawater(C) Trying to recover uranium out of seawater may someday be worthwhile(D) To try for the recovery of uranium out of seawater may someday be worthwhile(E) Recovering uranium from seawater may be worthwhile to try to do someday

I would say B.

"This process" is referring to "recover uranium from seawater" which to me is a misplaced modifier. Choice A doesn't seem gramatically correct.

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30 Apr 2008, 20:27

sondenso wrote:

448.It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.(A) It may someday be worthwhile to try to recover uranium from seawater(B) Someday, it may be worthwhile to try and recover uranium from seawater(C) Trying to recover uranium out of seawater may someday be worthwhile(D) To try for the recovery of uranium out of seawater may someday be worthwhile(E) Recovering uranium from seawater may be worthwhile to try to do someday

"Try to" is the correct idiom, so eliminate B."Out of seawater" is incorrect, so eliminate C.D is too awkward and E is redundant, so eliminate both.

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A cannot be the right answer, since "it" does not really refer to anything.

It is ok for "it" not to refer to anything. It is an impersonal "it" (ie it rains)

I don't think so, refer to MGMAT SC review, this is one of the problem they talked about.

It is one thing for "it" to have an ambiguous referent but it is another to have "it" as an impersonal pronoun. While the former is wrong, the latter is acceptable.Please refer to the following post:11-p47963?t=8452_________________

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01 May 2008, 21:07

Paul wrote:

I believe the difference b/w A and C is very subtle, even too subtle to really appear on the GMAT. From my own experience, whenever faced with an infinitive or present participle form, I tend to choose the former.